13205990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{26951}}^1$

素因数の和:26972

約数の個数: 24

約数和(自身を含む): 27652752

約数和(自身を除く): 14446762

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 26951, 53902, 134755, 188657, 269510, 377314, 943285, 1320599, 1886570, 2641198, 6602995, 13205990]

約数ペア:

[(1, 13205990), (2, 6602995), (5, 2641198), (7, 1886570), (10, 1320599), (14, 943285), (35, 377314), (49, 269510), (70, 188657), (98, 134755), (245, 53902), (490, 26951)]